Interestingly, Mileage Plus analysis has shown that when members redeem miles for air-travel rewards, their loyalty increases.

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In full-disclosure, I am a frequent United flier (almost exclusively international and in premium cabins) and a top-tier Mileage Plus member and have been for quite a few years.

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During the first week of the Asian Tsunami in 2004, United Airlines' Mileage Plus members donated 40 million miles to help humanitarian organizations get support on the ground for the relief efforts.

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And Fiesta including the projected 40-mpg-plus mileage of the EcoBoost engine will be there to take advantage.

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